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18 Gauge Primary Wire – 100 Foot Black Spool for Electrical Repairs

Original price was: $13.50.Current price is: $7.74.

Sale!
SKU: SMA-677-118B Category:

Every farmer knows that electrical problems always seem to pop up at the worst possible time—right when you’re trying to finish planting or get that last field harvested. Whether you’re fixing broken connections on implement lights, replacing worn harnesses, or adding new accessories to your tractor, having quality primary wire on hand saves you time and trips to town when electrical issues pop up. This 18-gauge wire handles the lower-amp circuits you’ll find powering dashboard lights, work lamps, turn signals, and other electrical accessories on just about any piece of farm equipment.

What You’re Getting

  • Vividly colored vinyl insulation on flexible stranded copper that makes circuit identification easy
  • 100-foot spool gives you plenty of wire for multiple repairs or complete harness rebuilds
  • 18-gauge thickness perfect for low-amp accessories like lights, gauges, and dashboard components
  • Black color works great for ground wires and applications where you want the wire to blend in
  • Flexible stranded construction that won’t crack from vibration like solid wire

Built for Real Farm Work

Modern tractors rely heavily on electrical systems for everything from fuel injection to hydraulics, and older equipment still needs reliable wiring for lights, gauges, and accessories. This wire works on any 12-volt system, from compact utility tractors to combines and everything in between. This wire is perfect for 12-volt systems on tractors, combines, balers, and other farm equipment.

Made to Last

Farm wiring takes a beating from heat, cold, moisture, and constant vibration. This primary wire uses quality copper conductors and durable insulation that stands up to the harsh conditions under the hood and around the farm. The vinyl insulation resists cracking and holds up to years of exposure to engine heat and weather.

Good to Know

When you’re splicing into existing circuits, always match the wire gauge—mixing different gauges can cause voltage drops and overheating. Use proper crimp connectors and heat shrink tubing for connections that’ll last. A good wire stripper makes clean cuts without nicking the copper strands underneath.